Earth (noun)

1. The planet we live on, the third from the sun.
2. The material that makes up the solid surface of the earth.
3. The ground or soil.
4. The conditions and environment of life on the earth.
5. The people of the earth.

Origin:

Middle english erthe, from old english eorthe; akin to old high german erda earth, latin terra.

Examples:

1. The earth rotates on its axis.
2. The garden had rich black earth.
3. He dug a hole in the earth.
4. Earth provides all the resources necessary for life.
5. Earth has a diverse population of people and cultures.